I am a divorced mother of 2 and I have my ex husband on child support.. but what I receive is a joke! I don't understand how they expect people to live on such an amount! I also, have to pay for my son's orthodontist... I would liek to know... what are my rights? SHould he be intitled to paying a percent?

He has also admitted to killing someone without getting caught, and has gone on runs with his friends to just beat people. He also has a history of drug abuse, he didn't finish high school, or his trade school, and he cannot keep a job for more than a few months. He has decided to file for joint and if he gets it, it can prevent my fiance and I from moving out of state for the air force. With all of this to take into consideration, what is the chance I wouldn't get full sole custody?